Crick and Watson's DNA Molecular Model
1953
1953
1955
1978
1967
1962
1963
1955-1980
1956
1959-1964
1975
1958
1974
1970
1961
1959
1967
1964
1975
1952
1955
1968
1960-1970
1974
1957
1957 (original); 1961 (model)
1960s
1960s
1958
1961
1961
1961
1959-1962
1973
1956
1961
1958
1980
circa 1956
1980-1950
1955-1965
1953
circa 1970
1958-1960
1958-1960
1958-1970
1970
1971
1963-1969
1955-1964
1969-1975